1) What is different about the H6 Rear Brakes? Subaru's literature lists all 3rd Gen. Legacy's with 11.3 in (290mm) Rear Disc's

2) The PN on the DBA Drw. 26700AE010 does not come up in either of the on line Databases I tried. The PN I have for the Rear Disc which covers both L's and GT's from 2000 on is 26700AE04A. This is a 290mm x 10mm Disc with a 170mm Handbrake.